唯一能带给你幸福的是你自己。
We should forget about small efficiencies, say about 97% of the time: premature optimization is the root of all evil.
The rat in the maze is not just learning a series of turns, but is building up a cognitive map of the whole situation.
Fearless is not the absence of fear. It’s not being completely unafraid. To me, fearless is having fears. Fearless is having doubts. Lots of them. To me, fearless is living in spite of those things that scare you to death.